The giant panda tells you why you can get fat even if you are vegetarian?

For humans, a “high-fiber, low-fat” diet is the secret to losing weight, but pandas eat such a “diet meal” every day, but they still look fat. why?

On January 19, Beijing time, the team of Academician Wei Fuwen from the Institute of Zoology, Chinese Academy of Sciences published an article in Cell Reports, revealing the secret of the interaction mechanism between wildlife diet and gut microbes from the perspective of conservation metagenomics.

This time, the research team, together with Wei Hong, a professor at the Army Medical University of the Chinese People’s Liberation Army, used the fecal bacteria transplantation method and germ-free mice for the first time to construct mouse models for colonization of the giant panda’s leaf-eating and bamboo-eating enteric bacteria, respectively. Multi-omics approaches such as genome, metaproteome, metabolome, and transcriptome have finally targeted a key gut bacterium, Clostridium butyricum.

“We found that in the season when giant pandas eat bamboo shoots as their main food, Clostridium butyricum in the gut will be more enriched. This allows giant pandas to more fully degrade and digest the crude fiber in bamboo shoots, producing more butyrate. ” said Huang Guangping, the co-first author of the paper and an assistant researcher at the Institute of Zoology, Chinese Academy of Sciences. “This matches the phenomenon of the giant panda’s significant weight gain during the bamboo shoot-eating period, which proves that the bamboo-eating period is a critical period for giant pandas to supplement energy and nutrients.”

The researchers fed butyrate to mice without transplanted foreign intestinal flora, and found that the phospholipid anabolic function of these mice was significantly enhanced, which met the body’s demand for lipids–smaller than the transplanted Enterobacteriaceae. The mice behaved the same, similar to the metabolic characteristics of giant pandas in the bamboo-eating season.

Through this mechanism, giant pandas can make full use of the nutrients in bamboo to meet their own nutritional needs.

In life, we often find that some older people seem to be getting shorter. Does height really decrease with age? The answer is yes.

A study published in the American Journal of Epidemiology concluded that height decreases with age in both men and women. Compared with men, women lose height faster as they age.

It’s worth mentioning that for men, the rate of height decline depends on their initial height. This means that taller people lose height faster, however, this does not apply to women.

The main reason why height decreases with age is that the colloidal fluid gradually decreases with age, resulting in thinning of the discs. When this happens, the vertebrae are brought closer together, resulting in a decrease in height. In addition, the back can become increasingly stiff due to the loss of body fluids. The vertebrae may also lose some minerals, making them thinner and smaller.

Furthermore, as we age, muscle tissue gradually shrinks or loses, and the body loses a lot of muscle. This muscle loss is most common in the torso and also makes people look shorter.